详解 swift3.0 可选绑定共用同一块内存空间的实例

ljTempModel = UserModel.init(userName: "sww", userID: 12, phone: "123", email: "deew")  ljTempModel?.ljArray.append("sww")  print("可选绑定前:/(ljTempModel?.ljArray)")   //可选绑定成功，然后赋值  if let modle : UserModel = ljTempModel{     modle.ljArray.append("123")     print("可选绑定后:/(String(describing: ljTempModel?.ljArray))")    print("/(modle.ljArray)可选绑定成功，然后赋值")  //此处modle 和ljTempModel有相同的内存地址空间，所以对modle添加“123”，就相当于对ljTempModel添加“123”，实际打印结果也是如此  }else{   //绑定失败   print("可选绑定失败")  } 

import Foundation   open class UserModel : NSObject {  var userName: String  ///< store user's name, optional  var userID: Int   ///< store user's ID  var phone: String?  ///< store user's telephone number  var email: String?  ///< store user's email  var responseData = NSMutableData()  var ljArray = Array<Any>()      // designated initializer  init(userName: String, userID: Int, phone: String?, email: String?) {   self.userName = userName   self.userID = userID   self.phone = phone   self.email = email      super.init()  } }